[Bug 20380] Heroes of Might and Magic III hangs

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=20380





--- Comment #39 from Roderick Colenbrander <thunderbird2k at gmail.com>  2009-12-11 13:04:44 ---
Created an attachment (id=25170)
 --> (http://bugs.winehq.org/attachment.cgi?id=25170)
Possible fix

This patch may fix issues some people are seeing due to my xrender work. The
bugs aren't the xrender code itself. Various games seem to use the stack
pointer as an extra register (at least populous does and some of the apps which
have moved to this bug as well). Due to this the memory trapping code on the
dibsections won't work. In ddraw we present a dibsection to the apps and this
causes the issues. For some reason this issue didn't occur before my changes,
so likely a different codepath in Wine is entered. Let me know if this works.

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